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Finding the Fourth Proportional to 316,987.53, 437,487.64 and 196,167.73

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Solution

The fourth proportional to 316,987.53, 437,487.64 and 196,167.73 is: 270,739.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,987.53 : 437,487.64 = 196,167.73 : x
  2. Step 2: Convert to fraction form
    316,987.53/437,487.64 = 196,167.73/x
  3. Step 3: Cross multiply
    316,987.53x = 437,487.64 × 196,167.73
  4. Step 4: Simplify right side
    316,987.53x = 85,820,957,241.86
  5. Step 5: Solve for x
    x = 85,820,957,241.86/316,987.53
  6. Step 6: Final answer
    x = 270,739.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.